# Service bulletin WI21\-009

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10190551
- Published by NHTSA: 2021\-04\-24
- Manufacturer's number: WI21\-009
- Manufacturer's date: 2021\-04\-19
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Warranty Information letter announcing that DTNA is increasing the Standard Diagnostic Times \(SDTs\) shown. The updated after treatment system \(ATS\) diesel exhaust fluid \(DEF\) pump times will be applied to repair orders opened on or after April 12, 2021.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10190551-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10190551-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2014 to 2016 FCCC XBP
- 2018 FCCC XBP
- 2012 to 2015 FCCC XCM
- 2013 to 2015 FCCC XCP
- 2018 to 2021 FCCC XCR
- 2011 to 2022 FREIGHTLINER 108SD
- 2011 to 2022 FREIGHTLINER 114SD
- 2014 to 2022 FREIGHTLINER 122SD
- 2011 to 2019 FREIGHTLINER ARGOSY
- 2007 to 2022 FREIGHTLINER BUSINESS CLASS M2
- 2007 to 2022 FREIGHTLINER CASCADIA
- 2008 to 2010 FREIGHTLINER CENTURY CLASS
- 2008 to 2021 FREIGHTLINER COLUMBIA
- 2007 to 2013 FREIGHTLINER CORONADO
- 2019 to 2021 FREIGHTLINER ECONIC SD
- 2008 to 2010 STERLING 9500
- 2007 to 2022 THOMAS BUILT BUSES SAF\-T\-LINER C2
- 2012 to 2022 WESTERN STAR 4700
- 2009 to 2022 WESTERN STAR 4900
- 2021 WESTERN STAR 49X
- 2015 to 2021 WESTERN STAR 5700
- 2011 to 2021 WESTERN STAR 6900

## Recalls for the same vehicles and component

- [21V715000](/recalls/nhtsa/21V715000.md), 2021-09-15: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
- [21V073000](/recalls/nhtsa/21V073000.md), 2021-02-12: ENGINE
- [2020408](/recalls/tc/2020408.md), 2020-09-01: Engine
- [20V527000](/recalls/nhtsa/20V527000.md), 2020-09-01: ELECTRICAL SYSTEM:WIRING; ENGINE AND ENGINE COOLING
- [18V581000](/recalls/nhtsa/18V581000.md), 2018-08-30: ENGINE AND ENGINE COOLING:ENGINE:DIESEL
- [16V416000](/recalls/nhtsa/16V416000.md), 2016-06-09: ENGINE AND ENGINE COOLING:ENGINE:DIESEL
- [2016285](/recalls/tc/2016285.md), 2016-06-06: Engine
- [15V816000](/recalls/nhtsa/15V816000.md), 2015-12-07: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
- [2015484](/recalls/tc/2015484.md), 2015-10-16: Engine
- [15V620000](/recalls/nhtsa/15V620000.md), 2015-10-02: ELECTRICAL SYSTEM:IGNITION:MODULE; ENGINE AND ENGINE COOLING:ENGINE

## Other bulletins for the same vehicles and component

- [CXA 03\_26\_Surge Tank](/bulletins/11030507.md), 2026-04-02, Other: ENGINE. CX Advocate for discolored coolant surge tanks \(24CSA\-20\)
- [FleetCom\_Heater Core](/bulletins/11027493.md), 2026-01-08, Other: ENGINE. Fleet Communications for Heater Core Plugging
- [TSB54\-377\-FTL](/bulletins/11027199.md), 2026-01-07, Service bulletin: ENGINE. Technical Service Bulletin Low Coolant Sensor
- [FleetCom\_SS 3163\-FTL](/bulletins/11026453.md), 2025-12-06, Other: ENGINE. Fleet Communications for Power Steering Reservoir Fill Cap Venting
- [FleetCom\_Low Coolant](/bulletins/11026421.md), 2025-12-05, Other: ENGINE. Fleet Communications for Low Coolant Sensor
- [CXA\_10\_25\_Low Coolant](/bulletins/11024962.md), 2025-11-05, Other: ENGINE. CX Advocate for P4, WST X\-Series, DD Engines Low/Critical Low Coolant Warnings
- [CXA\_10\_25\_Conmet Oil Pan](/bulletins/11024958.md), 2025-11-05, Other: ENGINE. CX Advocate for ConMet Oil Pan Insert Additional Issues
- [CXA\_9\_25\_Tech Questions](/bulletins/11023683.md), 2025-10-03, Other: POWER TRAIN; ENGINE. CX Advocate for technical questions/issues raised
- [CXA\_8\_25\_Tech Questions](/bulletins/11022341.md), 2025-09-02, Other: POWER TRAIN; ENGINE; UNKNOWN OR OTHER. CX Advocate for technical questions/issues raised
- [24CSA\-19Rev](/bulletins/11022317.md), 2025-09-02, Other: ENGINE. Revised Customer Service Annoucement for No Trouble Found Heavy Duty Engine Product \(HDEP\) Oil Separator Leaks

JSON: [/v1/bulletins/10190551](/v1/bulletins/10190551)

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